what is sip trunk and what is sip gateway

1. What is the BIOS ?The BIOS is an abbreviation for the English basic input output system, and the Chinese name is the basic input and output systems after translation. Its full name should be Rom-bios, meaning read-only memory basic input/output system. In fact, it is a se

This is a creation in Article, where the information may have evolved or changed. [Ethereum Smart Contract] (http://upload-images.jianshu.io/upload_images/11831773-b4c4b20efddd1e04.jpg?imageMogr2/auto-orient/strip% 7cimageview2/2/w/1240) Ethereum is a distributed computing platform. It generates an encrypted currency named ether. Programmers can write "smart contracts" on the Ethereum blockchain, and these

"What is design?" "This metaphysical topic, his thinking in his own words, began to use a designer's" mission "to ask himself. Why did you come to this world? Why do you want to do the design? What do you want to leave for the world? I read the original research "design design", not fashion (in this world, fashion, but always chasing),

Preface--Speaking in frontI think there are a lot of beginners who have seldom been in touch with the background programming language before, like me, the confused of a series of "nouns" in JavaScript. Seems to know what to say, but in fact the understanding is not clear; I think, learning any kind of knowledge, the first should be the most basic explanation of the noun clear (know

First, the understanding of the Module divisionFor a large (here is only a medium-sized system) system, the code is written not a day, the level of detail is not a glance can see clearly.In this case, you need to think well, preferably from top to bottom.The ability to partition the best in a modular way, so that the task can be assigned well during development (

Stock entry: What is stock index and what is stock index Stock entry: What is stock index and what is stock index I. Index Definition The s

I have been using ACLs for user Rights Management in Web applications, but it is said that RBAC is more powerful than ACLs and where does the advantage manifest itself? Reply content: I have been using ACLs for user Rights Management in Web applications, but it is said that RBAC is more powerful than ACLs and wher

I was confused yesterday and thought about what is entrepreneurship? What is the role of a company? Then I thought about it and understood it. Many people are clamoring for entrepreneurship all day, and there are a lot of explanations on the Internet, but it makes a lot of entrepreneurs unable to get started, because

What is a class? What is an object? Do you fully understand the meaning of what they represent?Examples of comparisons in the real world: Human = class, Zhang San = object; dog = class; Our family died in the previous few years rhubarb = object; Chinese = class; Andy Lau = O

What is MDS In the OAF framework? What is OAPageContext OAWebBean ?, Oafoapagecontext Address: http://oracle.anilpassi.com/mds-in-oa-framework-what-exactly-it-is-2.html We know that "MDS" is